SPRZ491F December   2020  – June 2026 DRA821U , DRA821U-Q1

 

  1.   1
  2. 1Modules Affected
  3. 2Nomenclature, Package Symbolization, and Revision Identification
    1. 2.1 Device and Development-Support Tool Nomenclature
    2. 2.2 Devices Supported
    3. 2.3 Package Symbolization and Revision Identification
  4. 3Silicon Revision 1.0, 2.0 Usage Notes and Advisories
    1. 3.1 Silicon Revision 1.0, 2.0 Usage Notes
    2.     i2330
    3. 3.2 Silicon Revision 1.0, 2.0 Advisories
    4.     i2049
    5.     i2062
    6.     i2091
    7.     i2103
    8.     i2116
    9.     i2123
    10. 3.3 i2126
    11. 3.4 i2127
    12.     i2134
    13.     i2137
    14.     i2146
    15. 3.5 i2151
    16.     i2157
    17.     i2159
    18.     i2160
    19.     i2161
    20.     i2163
    21.     i2166
    22.     i2177
    23.     i2182
    24.     i2183
    25.     i2184
    26.     i2185
    27.     i2186
    28.     i2187
    29.     i2189
    30.     i2196
    31.     i2197
    32.     i2201
    33.     i2205
    34.     i2207
    35.     i2208
    36.     i2209
    37.     i2216
    38.     i2217
    39.     i2221
    40.     i2222
    41.     i2227
    42.     i2228
    43.     i2232
    44.     i2233
    45.     i2234
    46.     i2235
    47.     i2237
    48.     i2241
    49.     i2242
    50.     i2243
    51.     i2244
    52.     i2245
    53.     i2246
    54.     i2249
    55.     i2253
    56.     i2257
    57.     i2274
    58.     i2275
    59.     i2277
    60.     i2278
    61.     i2279
    62.     i2283
    63.     i2306
    64.     i2307
    65.     i2310
    66.     i2311
    67.     i2312
    68.     i2320
    69.     i2326
    70.     i2329
    71.     i2351
    72.     i2360
    73.     i2361
    74.     i2362
    75.     i2366
    76.     i2371
    77.     i2372
    78.     i2383
    79.     i2401
    80.     i2409
    81.     i2413
    82.     i2414
    83.     i2418
    84.     i2419
    85.     i2422
    86.     i2424
    87.     i2435
    88.     i2449
    89.     i2459
    90.     i2482
  5.   Trademarks
  6.   Revision History

i2449

RAT: R5FSS RAT MMRs Not Parity Protected

Details:

Values stored in R5FSS RAT MMRs are not parity protected while stored. This means a bit flip in the MMR, even when parity protection is enabled, would not be detected, so there is no protection from permanent or transient errors. Initiator parity checking (where the parity is calculated dynamically from values stored in the MMR at the time of read) only covers errors introduced over the interconnect. It does not cover errors that may exist in the stored MMR values themselves.

Workaround:

User need to perform a Software readback of MMR values during runtime.